28 is approximately the number of Earth years that make one Saturn year.

28 is a happy number, a triangular number, a hexagonal number, a centred nonagonal number, a harmonic divisor number, the fourth magic number and the second perfect number. It can be partitioned 3718 ways.

The Sombrero galaxy is roughly 28 million light years away from us. Zeta Tucanae is an F-class star roughly 28 light years away.

The object M28 is a globular cluster in the constellation Sagittarius. The object NGC 28 is an elliptical galaxy in the constellation Phoenix.

Aged 28 in 1592, William Shakespeare wrote The Comedy of Errors and in 1887 Arthur Conan Doyle wrote “A Study in Scarlet”, the first Sherlock Holmes story.

Aged 28 in 1850 Rudolf Clausius discovered the second law of thermodynamics and invented the concept he would later call “entropy” and in 1772 Antoine Lavoisier deposited a sealed note with his theory of combustion, concerning a gas which he would later name “oxygen”.

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Supernova Condensate is a blog about our place in the Universe. Of astronomy, chemistry and life in the big bad bubble of academia.

Invader Xan is a molecular astrophysicist and part-time alien invader, who spends life looking at very small things on very large scales, and trying to better understand the chemistry of interstellar space.

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